Warp stop-motion for looms.



No. 747,311. r

v PATENTED DEC. 15, 1903. G. B. AMBLER. WARP STOP MOTION FOR LO0MS.,

APPLICATION FILED OUT. 2 1903.

N0 MODEL.

' UNITED STATES Patented December 15, 1903.

PATENT OFFICE.

GEORGE B. AMBLER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

WARP STOP-MOTION FOR LOOMS.

SPECIFICATION formingpart of Letters Patent No. 747,311, dated December 15, 1903.

Application filed October 2, 1903.

.[ all whom it may concern:

Be it known that I, GEORGE B. AMBLER, a citizen of the United States, and a resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Warp Stop-Motions for Looms, of which the following description, in connection with the accompanying drawings, is a specification,

' like characters on the drawings representing like parts.

This invention relates to warp stop-motions forlooms andofthe type wherein substantially vertically movable detectors, which also serve as heddles, are normally maintained inopera- I 5 tive by the warp-threads, 2. released detector effecting automatically the operation of a loom stopping instrumentality. In such looms, and particularly wherein multiple harnesses are used, the lower ends of the several sets of heddle-detectors are divided by a transverse separator, usually a casting .extended across the loom and having secured to its foot a plate having its front and rear edges serrated to serve as back-stops for re-.

leased detectors when engaged by the feeler. Such aconstruction is shown in United States Patent No.729,046, two feelers being arranged to move toward and from each other in paths below the detector-heddles, but engaging one ofthe latter when released. In setting up such a mechanism the back-stops must be properly located with relation to the feelers, and it sometimes happens that the top of the separator is not properly positioned with relation to the warps in the lower plane of the shed. It is also often advisable to adjust the level of the warp in the loom in view of the character of goods being woven, some weaving slacker than others. As it is desirable to support such warps by the top of the separator, the impossibility'of setting it properly to support the warps and at the same time to accurately position the back-stop plate or plates is a practical objection; and

my present invention has for one of its objects the production of means for efiecting such adjustment of the separator as will properly support the warps without interfering with the back-stops.

Another object is the improvement of the Serial No. 175,418. (No model) construction of the carrier for the back-stop and also of the warp-sustaining member itself, which latter serves as a head or cap for the carrier and completes the means for separating the lower ends of the heddle-detectors.

The novel features of my invention will be fully described in the subjoined. specification and particularly pointed out in the following claims.

Figurelisatransversesectional view,taken between the loom sides, of a sufficient portion of a loom to be understood with one embodiment of my invention applied thereto; and Fig. 2 is a perspective detail, partly broken out, of one end of the separating means and its supporting-bracket, it being understood that one of such brackets is rigidly secured to each loom side, preferably onthe arch.

Referring to Fig. 1, the main harness-frames V H H to H are suitably suspended from the arch A by suitable means, each frame having a cross-bar, as h upon which are mounted the heddle-detectors h,which may be substantially as in the patent referred to, five harness-frames being shown. Vibratable feelers ff are mounted on rock-shaftsf f geared together and operating in well-known mannor, 3. released detector-heddle engaging and arresting a feeler and eifecting automatically the operation of a loom-stopping instrumen- 8o tality. (Not-shown.)

One of the supporting-brackets is shown in Fig. 2, it being made as a casting B, having outturned lugs or ears b by which it is bolted to the arch, the bracket having an up right inwardly-extended web I), partly shown in dotted lines and having its sides downwardly-divergent. y

Bearings for the feeler rock-shafts are secured to the lower part of the bracket, one go of such bearings being shown at B, Fig. 2.

A back-stop carrier, shown herein as abar 0, preferably made of wood and having its front and rear sides slightly inclined, has secured to it back-stop plates'm -n,made of sheet 5 metal and outturned at their lower edges at m 'n and toothed or serrated thereat. The plates are set against and secured to the inclined front and rear faces of the carriers by screws 5, and,as shown in Fig. 2, the ends of ICC the plates project beyond the end of the carrier. The projecting ends of the plates receive between them the lower end of the web and are secured firmly thereto by suitable screws 6. The back-stop plates are thus positioned properly with relation to the paths of movements of the feelers, and while the construction is sufficiently rigid it is light and simple in character. The head or caplike upper portion of the separator and which also constitutes the warp-sustaining member is wholly independent of the carrier and is preferably made of sheet metal, shown at K, bent into substantially shape and rounded at the top or bend at la Theinclination of the sides of said member corresponds substantially to that of the front and back of the carrier 0, the member straddling the bracket-web b at each end, with its feet or separated lower edges overlapping the plates m and n. Upright slots 70', Fig. 2, are made in each side of 'the member near its ends to receive bolts b which pass transversly through holes in the web b, the bolts being provided with clamping-nuts b and washers 8. The head or cap K is vertically adjusted to the height desired to properly support the warps in the lower plane of the shed, according to the shed-opening, and then the nuts b are set up,firmly holding said head or warpsustaining member in adjusted position.

Manifestly such adjustment can be changedat any time without interfering with or requiring any change in the setting of the backstops or their carrier. The said member divides or separates the lower ends of the several series of detector-heddles into two groups, which slideupon and are in a measure guided by the inclined sides of said member.

As three series of heddle detectors are shown back of the warp-sustaining member, a guard-plate g is provided, made of sheet metal and carried by lateral supports g 9 mounted in suitable holders on the brackets B. A rod g also mounted on the brackets,

serves to guide the two front sets of heddledetectors.

The construction herein described is simple, cheap, and durable, effective, and readily adjustable to accommodate diiferent shedopenings.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In awarp stop-motion forlooms,a bracket at each side of the loom, having an inwardlyprojecting, upright web, and a warp-sustainiug member extended from one to the other bracket and vertically adjustable on the webs thereof.

2. In a warp stop-motion for looms, a plurality of vertically reciprocating harness frames each having heddles which also serve as detectors, a transverse rigidly-supported carrier to form a back -stop for a released detector-heddle, and a vertically-adjustable warp-sustaining member located above the carrier.

3. In a warp stop-motion for looms, a transverse carrier, a supporting-bracket for each end thereof, having an upright, inwardlyprojecting web to which the carrier is attached, an overhead member to sustain the warps between the front and back harnesses, and vertically-adjustable means to secure said member on the inturued webs of the brackets.

4:. In awarp stop-motion for looms, a transverse carrier, a serrated back-stop plate mounted on each side of and projecting beyond the ends of the carrier, a supportingbracket for each end of the carrier, having an upright inwardly-projecting web to enter between the adjacent ends of the back-stop plates, and fastenings to secure the latter to the bracket-webs.

5. In a warp stop-motion for looms, a transverse carrier to form aback-stop fora released detector-heddle, a supporting-bracket for each end of the carrier, having an upright, inwardly-projecting web to which the carrier is attached, an overhead cap-like warp-sustaining member the foot of which partly overlaps the carrier, and vertically-adjustable means to secure said member on the bracketwebs above the carrier.

6. In a warp stop-motion for looms, a transverse carricr, back-stop plates mountedon the front and rear sides of the carrier and each having its lower edge outturned and.

serrated, a supporting-bracketfor each end of the carrier, having an upright, in wardly-projecting web, means to connect the carrier and webs, an overhead substantially A-shaped.

warp-sustaining member to straddle the webs and partly overlapping the back-stop plates, and means to secure said member in vertically-adjusted position on said webs above the carrier.

7. In a Warp stop-motion for looms, a transverse bar, serrated back-stop plates mounted on the front and rear sides thereof and projecting beyond the ends of the bar, a supporting-bracket for each end of said bar, having an upright, inwardly-projecting web, the projecting ends of the back-stop plates receiving between them the lower ends of the webs, means to secure said plates to the webs, an overhead sheetmetal warp-sustaining member adapted to straddle the webs above the bar and partly overlap the back-stop plates, and attachingbolts passed through vertical slots with which said member is provided, whereby the warp-sustaining member may be adjusted vertically.

In testimony whereof I have signed my name to this specification in the. presence of two subscribing witnesses.

GEORGE B. AMBLER.

Witnesses:

GEORGE OTIS DRAPER, ERNEST W. WOOD. 

